MM1291AF Datasheet (MITSUMI) - Protection of Lithium Ion Batteries (one cell)

MM1291AF, Protection of Lithium Ion Batteries (one cell)

Pin NO.

NAME GND I/O Input connected between VIN-GND.

Nch-FET gate connection pin for discharge control.

Switches gate OFF when 2 GD Output excess discharge is detected, and for current protection.

Switches gate ON when excess discharge is detected in normal state.

Detection pin for voltage between

MITSUMI Protection of Lithium Ion Batteries (one cell) MM1291 Protection of Lithium Ion Batteries (one cell) Monolithic IC MM1291 Outline This is a protection IC for one-cell series that protects lithium ion batteries during excess charging, discharging, or overcurrent.

If abnormalities occur during charging and excess voltage is applied, it has a function that turns off the external FET switch when voltage is applied to each battery beyond a specified time (overcharging detection).

It also h

MM1291AF Features

* 1. 2. 3. 4. 5. Current consumption (during overcharging) Current consumption (normal) Current consumption (during excess discharge) Consumption current (during excess discharge) Overcharge detection voltage (Ta=-20°C~+70°C) VCC=4.5V VCC=3.5V VCC=1.9V VCC=1.0V VCC pin 40µA typ. VCC pin 7µA typ. 0.7µA